could如果是表示“可能”用于一般過(guò)去時(shí)態(tài)時(shí),回答可用could.
e.g.Could he play the piano two years ago?肯定回答：Yes, he could.否定回答：No, he couldn't.
如果表示“委婉”,回答用"can".(Could是can的過(guò)去式.在問(wèn)句中could表委婉的語(yǔ)氣.在麻煩別人或表邀請(qǐng)的時(shí)候希望得到對(duì)方肯定的回答.問(wèn)句中的could可以用can代替.但為了禮貌.通常用前者.答句中考慮到時(shí)態(tài).通常用can回答.)
e.g.Could I use your computer? 肯定回答可用：Yes, you can. 但不能用Yes, you could.否定回答可用：Sorry, you can't.不用Sorry,you could't.（這是固定的定律哦!）
所以選B,望采納,謝謝!
could i use your computer?no,you---.i have to---it.A couldn't,work on B can't,work on
could i use your computer?no,you---.i have to---it.A couldn't,work on B can't,work on
英語(yǔ)人氣：868 ℃時(shí)間：2020-02-03 04:45:14
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